3
* Copyright (c) 2003 Fabrice Bellard
4
* Copyright (c) 2006 Konstantin Shishkov
6
* This file is part of FFmpeg.
8
* FFmpeg is free software; you can redistribute it and/or
9
* modify it under the terms of the GNU Lesser General Public
10
* License as published by the Free Software Foundation; either
11
* version 2.1 of the License, or (at your option) any later version.
13
* FFmpeg is distributed in the hope that it will be useful,
14
* but WITHOUT ANY WARRANTY; without even the implied warranty of
15
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
16
* Lesser General Public License for more details.
18
* You should have received a copy of the GNU Lesser General Public
19
* License along with FFmpeg; if not, write to the Free Software
20
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
25
* @brief LZW decoding routines
26
* @author Fabrice Bellard
27
* Modified for use in TIFF by Konstantin Shishkov
42
/* clients should not know what LZWState is */
43
typedef void LZWState;
45
/* first two functions de/allocate memory for LZWState */
46
void ff_lzw_decode_open(LZWState **p);
47
void ff_lzw_decode_close(LZWState **p);
48
int ff_lzw_decode_init(LZWState *s, int csize, const uint8_t *buf, int buf_size, int mode);
49
int ff_lzw_decode(LZWState *s, uint8_t *buf, int len);
50
const uint8_t* ff_lzw_cur_ptr(LZWState *lzw);
51
void ff_lzw_decode_tail(LZWState *lzw);
53
/** LZW encode state */
54
struct LZWEncodeState;
55
extern const int ff_lzw_encode_state_size;
57
void ff_lzw_encode_init(struct LZWEncodeState *s, uint8_t *outbuf, int outsize,
58
int maxbits, enum FF_LZW_MODES mode,
59
void (*lzw_put_bits)(struct PutBitContext *, int, unsigned int));
60
int ff_lzw_encode(struct LZWEncodeState * s, const uint8_t * inbuf, int insize);
61
int ff_lzw_encode_flush(struct LZWEncodeState *s,
62
void (*lzw_flush_put_bits)(struct PutBitContext *));
64
#endif /* AVCODEC_LZW_H */